ECONOMTf ZOOLOGY ENTOMOT.OGY. 159 



"This so:iso)i's roconls iiidic-ilc Hint iiliout '.) nine weeks from the time the 

 peliils fnll is the ri.i,'ht tiiiic to irive Ihe lirst sprM.viii.u lor the second hrood." 



Hyponomeuta malinella. D. Saracomknos {Ci)i)niK Jour., 190S,. No. 11, pp. 

 21')-211. pi. 1). — The author describes the life history and habits of the apple- 

 tree ermine moth. Arsenicals are said to control the pest. 



Investig-ations of the olive fly, J. Chapelle and J. Ruby (Bui. Agr. AJgerie 

 ct Tiiiiisic. I', (I90S), \o. 22. pp. J.'/J-J'/T). — A report of experim<>nts conducted 

 hi liKtx l)y the olive-culture service with remedies for the olive Hy. 



Hymenopterous parasites of the olive fly in Italy and the probable exist- 

 ence of other parasites in the native home of the fly, F. Silvestri {Atti R, 

 1st. Incoragg. NuikjU. (1. .scr.. .3!) (1907), pp. 637-(ni). — The 4 species Eiipclmiis 

 tirozonius, EuJuphus longiilus, Eiirytoma rosa', and Dinarmus dacicida of the 

 family Chalcidid.-e are the iuiport;int parasites of the olive tly. Their habits 

 and importiince in combating the tly are considered at length. There appears to 

 be a considerable variation in the relative percentage of infestation by the dif- 

 ferent species at the different points from which collections were made. The 

 author also considers the methods of breeding and utilizing these parasites. He 

 concludes that a study of the parasites of the olive tly in the native home of 

 the olive in southern and western Asia ought to result in the discovery of 

 species that will assist in the control of the pest. 



The olive tineid, J. Chapelle and J. Ruby (Bui. Mens. Off. Rcnseig. Agr. 

 [I'diis]. 7 (190S), No. 6, pp. 677-GSO; Rev. Vit., 30 (l<J08).yo. 7,39. pp. 11,-17).— 

 The injury caused by the olive tineid ( Tinea oleocUa or Prays olecc) is said to place 

 it among the most injurious of the olive pests, it often causing more injury than 

 the olive fly. Attention is called to a work published by F. Silvestri," and from 

 which information ujiou its life history has been taken. Descriptions of the life 

 stages are given, there being 3 generations during the year. The larvae of the 

 first generation cause injury by boring in the bark of the younger limbs, the 

 larvre of the second generation live in the flower buds, and the larvse of the 

 third generation infest the fruit. Agcniospis fiisvieolUs is mentioned as a para- 

 site of the pest, and remedial measures aie l)rietly considered. 



Observations on treatment of the Eudemis, R. Uteau and F, Perpezat 

 (Rev. ^ it., 30 (1908). No. 7S2, pp. 636-658). — A brief report of investigations 

 made of the several methods recommended in combating the grapevine eudemis 

 (E. hotrana). 



An enemy of grafts and cuttings in nurseries, P. Hoc (Prog. Agr. et Vit. 

 (Ed. VEst-Centre), 29 (1908), Xo. 39, pp. 390, 391).— The larva of Helops Innipes 

 is described as the source of considerable injury to grafts and cuttings. Naph- 

 thalin placed about young vines has given considerable protection. An insecti- 

 cide known as vaporite has also given good results. 



[Forest insects], E. P. Stebbing ([Indian Forest Dcpt.^, Ser. Forest ZooL, 

 Leaflets, 190S, Nos. 1. pp. S, flgs. .J : 2, pp. ■',. figs. 5; 3. pp. 7. figs. 2). — In the 

 first of these leaflets the author considers the sal bark-borer (Sphwrotrypes 

 siwalikensis) , in the second the teak defoliator (Hyhlaxi puera). and in the 

 third the teak leaf skeletonizer (Ptirauxta niacJurralis). 



The biolog'y of and remedies for bark beetles, E.. Knociie (Forstio. Centbl., 

 n. sen, 30 (1908), Xos. 3, pp. 1 J, 1-153; J,, pp. 200-209; 5, pp. 2 ',5-2 5.',). —A 

 somewhat extended discussion of these insects and the methods of dealing 

 with theuL 



A monographic study of the Chermesidae, C. Borner (Arh. K. Biol. Anst. 

 Land M. Forstic, 6 (1908), No. 2, pp. 81-320, pis. 6, figs. 101: ahs. in Riv. 

 Pntol. Veg., 3 (1908). Xo. 8. pp. 121-12.',).— lu part 1 of this work the author 



« La Tignola dell' Olivo. Portici, 1907. 



